Electrode properties and phase composition of Ti0.5Ni0.25Al0.25 hydrogen storage alloys and theoretical simulation

• Published in: Transactions of Nonferrous Metals Society of China Vol. 20; no. 10; pp. 1899 - 1905
• Main Author: 吴军 徐艳辉 陈长聘 郑军伟 李德成
• Format: Journal Article
• Language: English
• Published: Institute of Electrochemical Power Sources,Soochow University,Suzhou 215006,China%Department of Materials Science and Engineering,Zhejiang University,Hangzhou 310027,China 01.10.2010
• Subjects: 化学反应动力学参数; 合金成分; 极化测量; 理论模拟; 电化学性能; 真空感应熔炼; electrochemical kinetics; hydrogen storage alloy; theoretical simulation; metal hydride electrode
• ISSN: 1003-6326
• DOI: 10.1016/S1003-6326(09)60392-7

Ti0.5Al0.25Ni0.25 alloy prepared by vacuum induction melting was studied.The phase composition was analyzed with X-ray technique and EDS analysis,and its electrochemical properties were investigated at various temperatures.Electrochemical reaction kinetic parameters were also studied with proper electrochemical techniques.The influence of the secondary corrosion reaction on the anodic linear polarization measurement was also analyzed by theoretical simulation.The results show that,proper ball-milling with nickel powders is beneficial to electrochemical performance.The theoretical simulation proves that,the existence of the side reaction can disturb the measurement of electrochemical reaction kinetic parameters.